geopak shape- complex shape
element placed in the shape file or model use for
superelevation layout on proposed
cross section templates. Both the horizontal (baseline)
and vertical (profile) parameters are equally
as important and necessary to create a shape for cutting
cross sections or processing NCWedge runs.
If the Designer needs run a preliminary superelevation
layout without the creation of a proposed grade
ready, then a real profile name with pseudo stations
and elevations can be created to meet the requirements
of the essence of a true geopak shape. See example
COGO input of pseudo inputs, [image].
Also see dependent
shape, independent
shape, MRG,
offset, PGL,
PGL chain, shape maker, and tie.
grade point ƒ1-
The effective point on a cross sections and typical
sections where the profile grade is applied. [image]
grade separation- crossing
of two or more horizontal alignments separated vertically
by control points relative to the vertical clearance
height, plus the height of the bridge girder and bridge
concrete slab (superstructure depth). Grade separations
apply to roadway crossings as well as railroad crossing
of roadway. Also see control point, substructure,
superstructure, and vertical clearance.
graded shoulder section ƒ2-
the treatment and design of shoulder sections normally
based on pavement design depth of
greater than 10 inches . [image]
Also see trench shoulder section.
NC DOT
NC DOH
NC GOV
